diff --git a/java/com/android/dialer/app/calllog/BlockReportSpamListener.java b/java/com/android/dialer/app/calllog/BlockReportSpamListener.java
index ecf629e..5c7641c 100644
--- a/java/com/android/dialer/app/calllog/BlockReportSpamListener.java
+++ b/java/com/android/dialer/app/calllog/BlockReportSpamListener.java
@@ -20,6 +20,7 @@
 import android.content.Context;
 import android.support.annotation.NonNull;
 import android.support.v7.widget.RecyclerView;
+import android.view.View;
 import com.android.dialer.blocking.FilteredNumberAsyncQueryHandler;
 import com.android.dialer.blockreportspam.BlockReportSpamDialogs;
 import com.android.dialer.blockreportspam.BlockReportSpamDialogs.DialogFragmentForReportingNotSpam;
@@ -31,26 +32,32 @@
 import com.android.dialer.logging.ReportingLocation;
 import com.android.dialer.spam.Spam;
 import com.android.dialer.spam.SpamComponent;
+import com.android.dialer.spam.promo.SpamBlockingPromoHelper;
 
 /** Listener to show dialogs for block and report spam actions. */
 public class BlockReportSpamListener implements CallLogListItemViewHolder.OnClickListener {
 
   private final Context context;
+  private final View rootView;
   private final FragmentManager fragmentManager;
   private final RecyclerView.Adapter adapter;
   private final FilteredNumberAsyncQueryHandler filteredNumberAsyncQueryHandler;
   private final Spam spam;
+  private final SpamBlockingPromoHelper spamBlockingPromoHelper;
 
   public BlockReportSpamListener(
       Context context,
+      View rootView,
       FragmentManager fragmentManager,
       RecyclerView.Adapter adapter,
       FilteredNumberAsyncQueryHandler filteredNumberAsyncQueryHandler) {
     this.context = context;
+    this.rootView = rootView;
     this.fragmentManager = fragmentManager;
     this.adapter = adapter;
     this.filteredNumberAsyncQueryHandler = filteredNumberAsyncQueryHandler;
     spam = SpamComponent.get(context).spam();
+    spamBlockingPromoHelper = new SpamBlockingPromoHelper(context, spam);
   }
 
   @Override
@@ -85,6 +92,10 @@
                   },
                   number,
                   countryIso);
+
+              if (isSpamChecked) {
+                spamBlockingPromoHelper.showSpamBlockingPromoDialog(rootView, fragmentManager);
+              }
             },
             null)
         .show(fragmentManager, BlockReportSpamDialogs.BLOCK_REPORT_SPAM_DIALOG_TAG);
@@ -122,6 +133,8 @@
                   },
                   number,
                   countryIso);
+
+              spamBlockingPromoHelper.showSpamBlockingPromoDialog(rootView, fragmentManager);
             },
             null)
         .show(fragmentManager, BlockReportSpamDialogs.BLOCK_DIALOG_TAG);
diff --git a/java/com/android/dialer/app/calllog/CallLogAdapter.java b/java/com/android/dialer/app/calllog/CallLogAdapter.java
index 7f8c889..376057f 100644
--- a/java/com/android/dialer/app/calllog/CallLogAdapter.java
+++ b/java/com/android/dialer/app/calllog/CallLogAdapter.java
@@ -564,6 +564,7 @@
     blockReportSpamListener =
         new BlockReportSpamListener(
             this.activity,
+            this.activity.findViewById(R.id.call_log_fragment_root),
             ((Activity) this.activity).getFragmentManager(),
             this,
             this.filteredNumberAsyncQueryHandler);
diff --git a/java/com/android/dialer/app/res/layout/call_log_fragment.xml b/java/com/android/dialer/app/res/layout/call_log_fragment.xml
index efc08fb..f056396 100644
--- a/java/com/android/dialer/app/res/layout/call_log_fragment.xml
+++ b/java/com/android/dialer/app/res/layout/call_log_fragment.xml
@@ -16,6 +16,7 @@
 
 <!-- Layout parameters are set programmatically. -->
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  android:id="@+id/call_log_fragment_root"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical">
diff --git a/java/com/android/dialer/logging/dialer_impression.proto b/java/com/android/dialer/logging/dialer_impression.proto
index 96ca9c6..16efd13 100644
--- a/java/com/android/dialer/logging/dialer_impression.proto
+++ b/java/com/android/dialer/logging/dialer_impression.proto
@@ -12,7 +12,7 @@
   // Event enums to be used for Impression Logging in Dialer.
   // It's perfectly acceptable for this enum to be large
   // Values should be from 1000 to 100000.
-  // Next Tag: 1366
+  // Next Tag: 1369
   enum Type {
     UNKNOWN_AOSP_EVENT_TYPE = 1000;
 
@@ -719,5 +719,12 @@
     VVM_USER_TURNED_TRANSCRIBE_OFF_FROM_SETTINGS = 1363;
     VVM_USER_TURNED_DONATION_ON_FROM_SETTINGS = 1364;
     VVM_USER_TURNED_DONATION_OFF_FROM_SETTINGS = 1365;
+
+    // Spam blocking call log promo shown for user.
+    SPAM_BLOCKING_CALL_LOG_PROMO_SHOWN = 1366;
+    // User enabled spam blocking through call log promo.
+    SPAM_BLOCKING_ENABLED_THROUGH_CALL_LOG_PROMO = 1367;
+    // Failure happened while enabling spam blocking through call log promo.
+    SPAM_BLOCKING_MODIFY_FAILURE_THROUGH_CALL_LOG_PROMO = 1368;
   }
 }
diff --git a/java/com/android/dialer/spam/promo/AndroidManifest.xml b/java/com/android/dialer/spam/promo/AndroidManifest.xml
new file mode 100644
index 0000000..7d766b8
--- /dev/null
+++ b/java/com/android/dialer/spam/promo/AndroidManifest.xml
@@ -0,0 +1,19 @@
+<!--
+  ~ Copyright (C) 2018 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<manifest
+    package="com.android.dialer.spam.promo">
+</manifest>
diff --git a/java/com/android/dialer/spam/promo/SpamBlockingPromoDialogFragment.java b/java/com/android/dialer/spam/promo/SpamBlockingPromoDialogFragment.java
new file mode 100644
index 0000000..0ea17d3
--- /dev/null
+++ b/java/com/android/dialer/spam/promo/SpamBlockingPromoDialogFragment.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.dialer.spam.promo;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.os.Bundle;
+
+/** Dialog for spam blocking on-boarding promotion. */
+public class SpamBlockingPromoDialogFragment extends DialogFragment {
+
+  public static final String SPAM_BLOCKING_PROMO_DIALOG_TAG = "SpamBlockingPromoDialog";
+
+  /** Called when dialog positive button is pressed. */
+  protected OnEnableListener positiveListener;
+
+  public static DialogFragment newInstance(OnEnableListener positiveListener) {
+    SpamBlockingPromoDialogFragment fragment = new SpamBlockingPromoDialogFragment();
+    fragment.positiveListener = positiveListener;
+    return fragment;
+  }
+
+  @Override
+  public void onPause() {
+    // The dialog is dismissed onPause, i.e. rotation.
+    dismiss();
+    super.onPause();
+  }
+
+  @Override
+  public Dialog onCreateDialog(Bundle savedInstanceState) {
+    super.onCreateDialog(savedInstanceState);
+    // Return the newly created dialog
+    return new AlertDialog.Builder(getActivity(), R.style.AlertDialogTheme)
+        .setCancelable(true)
+        .setTitle(R.string.spam_blocking_promo_title)
+        .setMessage(R.string.spam_blocking_promo_text)
+        .setNegativeButton(
+            R.string.spam_blocking_promo_action_dismiss, (dialog, which) -> dismiss())
+        .setPositiveButton(
+            R.string.spam_blocking_promo_action_filter_spam,
+            (dialog, which) -> {
+              dismiss();
+              positiveListener.onClick();
+            })
+        .create();
+  }
+
+  /** Positive listener for spam blocking promotion dialog. */
+  public interface OnEnableListener {
+    /** Called when user clicks on positive button in the spam blocking promo dialog. */
+    void onClick();
+  }
+}
diff --git a/java/com/android/dialer/spam/promo/SpamBlockingPromoHelper.java b/java/com/android/dialer/spam/promo/SpamBlockingPromoHelper.java
new file mode 100644
index 0000000..9349577
--- /dev/null
+++ b/java/com/android/dialer/spam/promo/SpamBlockingPromoHelper.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.dialer.spam.promo;
+
+import android.app.FragmentManager;
+import android.content.Context;
+import android.preference.PreferenceManager;
+import android.support.annotation.VisibleForTesting;
+import android.support.design.widget.Snackbar;
+import android.view.View;
+import com.android.dialer.configprovider.ConfigProviderBindings;
+import com.android.dialer.logging.DialerImpression;
+import com.android.dialer.logging.Logger;
+import com.android.dialer.spam.Spam;
+
+/** Helper class for showing spam blocking on-boarding promotions. */
+public class SpamBlockingPromoHelper {
+
+  static final String SPAM_BLOCKING_PROMO_PERIOD_MILLIS = "spam_blocking_promo_period_millis";
+  static final String SPAM_BLOCKING_PROMO_LAST_SHOW_MILLIS = "spam_blocking_promo_last_show_millis";
+
+  private final Context context;
+  private final Spam spam;
+
+  public SpamBlockingPromoHelper(Context context, Spam spam) {
+    this.context = context;
+    this.spam = spam;
+  }
+
+  /** Shows a spam blocking promo dialog with on complete snackbar if all the prerequisites meet. */
+  public void showSpamBlockingPromoDialog(View view, FragmentManager fragmentManager) {
+    if (!shouldShowSpamBlockingPromo()) {
+      return;
+    }
+
+    updateLastShowSpamTimestamp();
+    Logger.get(context).logImpression(DialerImpression.Type.SPAM_BLOCKING_CALL_LOG_PROMO_SHOWN);
+    SpamBlockingPromoDialogFragment.newInstance(
+            () -> {
+              Logger.get(context)
+                  .logImpression(
+                      DialerImpression.Type.SPAM_BLOCKING_ENABLED_THROUGH_CALL_LOG_PROMO);
+              spam.modifySpamBlockingSetting(
+                  true, success -> showModifySettingOnCompleteSnackbar(view, success));
+            })
+        .show(fragmentManager, SpamBlockingPromoDialogFragment.SPAM_BLOCKING_PROMO_DIALOG_TAG);
+  }
+
+  /**
+   * Returns true if we should show a spam blocking promo.
+   *
+   * <p>Should show spam blocking promo only when all of the following criteria meet 1. Spam
+   * blocking setting is available. 2. Spam blocking setting is not yet enabled. 3. Time since last
+   * spam blocking promo exceeds the threshold.
+   *
+   * @return true if we should show a spam blocking promo.
+   */
+  @VisibleForTesting
+  boolean shouldShowSpamBlockingPromo() {
+    if (!spam.isSpamEnabled() || !spam.isSpamBlockingAvailable() || spam.isSpamBlockingEnabled()) {
+      return false;
+    }
+
+    long lastShowMillis =
+        PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext())
+            .getLong(SPAM_BLOCKING_PROMO_LAST_SHOW_MILLIS, 0);
+    long showPeriodMillis =
+        ConfigProviderBindings.get(context)
+            .getLong(SPAM_BLOCKING_PROMO_PERIOD_MILLIS, Long.MAX_VALUE);
+    return lastShowMillis == 0 || System.currentTimeMillis() - lastShowMillis > showPeriodMillis;
+  }
+
+  private void updateLastShowSpamTimestamp() {
+    PreferenceManager.getDefaultSharedPreferences(context.getApplicationContext())
+        .edit()
+        .putLong(SPAM_BLOCKING_PROMO_LAST_SHOW_MILLIS, System.currentTimeMillis())
+        .commit();
+  }
+
+  /**
+   * Shows a modify setting on complete snackbar and a link to redirect to setting page
+   *
+   * @param view the view to attach on-complete notice snackbar
+   * @param success whether the modify setting operation succceeds
+   */
+  private void showModifySettingOnCompleteSnackbar(View view, boolean success) {
+    if (!success) {
+      Logger.get(context)
+          .logImpression(DialerImpression.Type.SPAM_BLOCKING_MODIFY_FAILURE_THROUGH_CALL_LOG_PROMO);
+    }
+    String snackBarText =
+        success
+            ? context.getString(R.string.spam_blocking_settings_enable_complete_text)
+            : context.getString(R.string.spam_blocking_settings_enable_error_text);
+    Snackbar.make(view, snackBarText, Snackbar.LENGTH_LONG)
+        .setAction(
+            R.string.spam_blocking_setting_prompt,
+            v -> context.startActivity(spam.getSpamBlockingSettingIntent(context)))
+        .setActionTextColor(
+            context.getResources().getColor(R.color.dialer_snackbar_action_text_color))
+        .show();
+  }
+}
diff --git a/java/com/android/dialer/spam/promo/res/values/strings.xml b/java/com/android/dialer/spam/promo/res/values/strings.xml
new file mode 100644
index 0000000..bef7381
--- /dev/null
+++ b/java/com/android/dialer/spam/promo/res/values/strings.xml
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~ Copyright (C) 2017 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License
+  -->
+
+<resources>
+  <!-- Title for the spam blocking promo dialog. [CHAR LIMIT=100] -->
+  <string name="spam_blocking_promo_title">Filter suspected spam calls?</string>
+  <!-- Text for the spam blocking promo dialog. [CHAR LIMIT=100] -->
+  <string name="spam_blocking_promo_text">Filtered spam calls will go straight to your voicemail</string>
+  <!-- Label for filter spam dialog action. [CHAR LIMIT=32] -->
+  <string name="spam_blocking_promo_action_filter_spam">Filter Spam</string>
+  <!-- Label for "Dismiss" dialog action. [CHAR LIMIT=32] -->
+  <string name="spam_blocking_promo_action_dismiss">Dismiss</string>
+  <!-- Button text to prompt a user to open spam blocking setting [CHAR LIMIT=NONE] -->
+  <string name="spam_blocking_setting_prompt">Settings</string>
+
+  <!-- Spam blocking error text, shown when error happens during setting enabling. -->
+  <string name="spam_blocking_settings_enable_error_text">Problem turning on spam filtering</string>
+  <!-- Spam blocking error text, shown when error happens during setting disabling. -->
+  <string name="spam_blocking_settings_disable_error_text">Problem turning off spam filtering</string>
+
+  <!-- On complete text shown when spam blocking is enabled successfully. -->
+  <string name="spam_blocking_settings_enable_complete_text">Spam filtering turned on</string>
+  <!-- On complete text shown when spam blocking is disabled successfully. -->
+  <string name="spam_blocking_settings_disable_complete_text">Spam filtering turned off</string>
+</resources>
diff --git a/packages.mk b/packages.mk
index 1f62f6b..5e69a15 100644
--- a/packages.mk
+++ b/packages.mk
@@ -59,6 +59,7 @@
 	com.android.dialer.searchfragment.remote \
 	com.android.dialer.shortcuts \
 	com.android.dialer.simulator.impl \
+	com.android.dialer.spam.promo \
 	com.android.dialer.speeddial \
 	com.android.dialer.spannable \
 	com.android.dialer.theme \